Ear muff



FIG. 1 is a front and left side perspective view of an ear muff showing my new design;

FIG. 2 is a front and right side perspective view thereof;

FIG. 3 is a left side perspective view thereof in a folded position;

FIG. 4 is a right side perspective view thereof in a folded position; and

FIG. 5 is a front elevational view thereof. 

The ornamental design for an ear muff, as shown and described. 